Door lock



Nov. 12, 1940. A. J. SCHOENHEIT DOOR LOCK Filed Nov. 14, 1938 Patented Nov. 12, 1940 DOOR LOCK a Albert J. Schoenheit, Detroit, Mich assignor, by mesne assignments, to Reconstruction Finance (kirporatiom Detroit, Micln, a corporation of United States Application mama, 14,1938, Serial No. 240,250

This invention relates generally to locks and more particularly to motor vehicle door locks. It is an object of the present invention to provide a new and improved motor vehicle door.- lock operable to lock front and rear doors and "one which is simple in structure and inexpensive to manufacture.

Other objects of the invention will become apparent from the following detailed description taken in connection with the accompanying drawing in which- Figure 1 is a view showing in part a motor vehicle body structure and my improved door lock, and Fig. 2 is a view shown in section taken along the line and in the direction of the arrows 2-2 of Fig. 1.

Referring to the drawing by characters of reference, the numeral l3 designates in general a body pillar or post commonly referred to as the center or locking pillar or motor vehicle bodies having front and rear doors II and i2 respectively. Adjacent the pillar III, the front door II is provided with an intumed flange l3 extending along the lock side thereof and mounted on the front door H adjacent the flange I3 is a lock mechanism mounted on a supporting plate or base l4 which is rigidly secured to the door. The door locking mechanism includes a latch or bolt I5 which is mounted on the base plate i4 and arranged to project into the pillar III, the pillar preferably being provided with a reenforcing plate l6 having an aperture to receive the bolt. A spring I! acts to urge the bolt outwardly into 5 latching position and retracting movement of the latch is limited by a stop member l8 mounted on the base plate H.

A lever 20, pivoted at its upper end to the base plate I4 is provided at its lower end with an 40 abutment flange 2| which loosely abuts an abutment flange 22 provided on the latch I! such that pivoting lever 20 in a counterclockwise direction facing Fig. 1 will withdraw the latch l5. Below the latch IS a pair of levers 23 and 24 45 are retained in a casing 25 which is mounted on rection which movement is limited to the position shown by the casing 25. The lever 23 is provided to cooperate with a key operated lock bolt 33 mounted below the lever in a casing 34 which is rigidly secured to the base plate l4. Since these locks are well known this lock has not been shown or described in detail.

Mounted on the base plate 14, below the, latch member l5 9. rectilinearly movable member 35 is provided and is operable to lock both of the doors II and I2 as well as prevent withdrawal of the latch I5. The operating member 35 is provided with an elongated aperture or slot 36 which receives a guide pin 31 which is rigidly secured to the base plate l4. The operating 15 member 35 includes an end portion 38 which when member 35 is moved" to the left, positions below lever arm 20 to prevent movement of lever 24 and therefore prevents unlatching of the door by the outside handle. 20

Rigidly secured to the operating member 35 is a locking bolt 40 which is slidably received and guided in an aperture provided in a flange 4| turned out-of the base plate l4. This locking bolt 40 is adapted to lock the front door II to 25 the pillar l0 and to operate a second locking bolt 42 which is adapted to lock the rear door 12 to the pillar III. In the pillar ID, the locking bolt 42 is operable in a tube 43 which aligns or registers with the front door locking bolt 40. 30 Preferably, the pillar It, in the locking side thereof toward the front door II is provided with a recess to receive a reenforcing plate 44 which is provided with an aperture through which the front locking member 40 is adapted to project 35 and engage and move the locking member 42. One end of the locking member is preferably enlarged, as at 45 and is adapted to abut the reenforcing plate 44 and overlie the aperture therein, the locking member 42 being moved to 40 retracted position, preferably by a helical coil spring 46. Preferably, the reenforcing plate 44, Fig. 2, is provided with an angularly disposed portion 44a to urge locking member 40 into the door in the event that the door is closed when 45 member 40 is in its outward position.

A remote and manual control, designated in general by the numeral 48 is provided within the vehicle body for operating the locking mechanism. This control may be rigidly secured to the front door II and journaled in an aperture in the plate 49 is an operating handle 50. The handle 50 is adapted to rotate a plate like member 5| in the outer periphery of which is provided a pair of spaced notches 5| a adapted to receive the rounded free end I2 of a leaf spring II which exerts a greater force than spring I. A link 56 is pivotally connected adjacent one end thereof to the rotatable member II, the other end of the link being pivotally connected to the operating member 35. The link 56 and the operating member 35 are connected, together by a pin' I! which engages in 'a slot in the'latch member I. This pin 51 is arranged to provide for lost motion betweenthe. latch l5 and link 58 on movement of the operating handle forward but abuts in the end of the slot on movement of the operating handle 50 rearwardly so as to retract the bolt II.

In operation of the lock, it will be seen that upon moving the operating handle II forward, locking member 40 will move into the pillar, ll locking the front door ll thereto and continuing in movement pushes locking member 42 so that it projects into the rear door Ilthereby locking the. rear door to the pillar. To unlock the doors,

the operating handle I! is drawn back to the intermediate position shown and the parts assume the positions shown in the drawing. In the locked positions of the parts, one end of member 35: positions beneath the lever preventing withdrawal of latch I! by the outside door handle (not shown). By mov ng the handle 5' rearward positive connection is made bypin" and the mally-spring-retracted bolt projectable into an associated keeper in the second door, one 01' said doors carrying a latch bolt operable from an interior remote-control lever by means of operating connections including an element engageable with the conventional externalehandle roll-back,

- the improvement which comprises providing an integral extension on said element including a portion projectaple through the door into the post keeper to concurrently force the post bolt into engagement with its associated keeper whereby positive locking of the latch-carrying door will concurrently secure the other door and at the same time positively secure the latchcarrying door.

ALBERT J. SCHOENHEIT. 

